Question

x+x=2x is this possible if not what the correct way

Answer 1

x+x=2x
is absolutely true and correct
always will be, just like
1+1=2

Answer 2

what property is it

Answer 3

combining like terms
I'll look up the correct name, hold on...

Answer 4

ok

Answer 5

I don't see this fitting into one if the fundamental properties, see if you can find one that looks like it fits on this site.
http://www.capitan.k12.nm.us/teachers/shearerk/basic_rules_of_algebra.htm

Answer 6

ya i dont either so what do i say it is

Answer 7

what are 2 examples of this

Answer 8

BRB sorry...

Answer 9

Not sure what you mean, but from this follows the ideas
x+3x=4x
7y-2y=5y
You can prove this with the distributive property:
x+3x=x(1+3)=x(4)=4x

Answer 10

i have 2 more 2 squared =-9 and txt=2x

Answer 11

x times x =2x

Answer 12

I'm sorry I have to leave. You should repost your question so someone else can answer.
BTW x*x=x^2 not 2x